﻿// --------------------------------------------------------------------------------------------------------------------
// <copyright file="ConfigurationDefault.cs" company="Rolosoft Ltd">
//   © Rolosoft Ltd
// </copyright>
// --------------------------------------------------------------------------------------------------------------------

#region License

// Copyright 2013 Rolosoft Ltd
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// http://www.apache.org/licenses/LICENSE-2.0
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#endregion

namespace Rsft.Net.Dns
{
    #region Usings

    using Rsft.Net.Dns.Entities;
    using Rsft.Net.Dns.Interfaces;

    using Wintellect.Threading.ResourceLocks;
    
    #endregion

    /// <summary>
    ///     The configuration default.
    /// </summary>
    internal sealed class ConfigurationDefault : IConfiguration
    {
        #region Static Fields

        /// <summary>
        ///     The one many resource lock.
        /// </summary>
        private static readonly OneManyResourceLock OneManyResourceLock = new OneManyResourceLock();

        /// <summary>
        ///     The local configuration.
        /// </summary>
        private static DnsConfiguration localConfiguration;

        #endregion

        #region Constructors and Destructors

        /// <summary>
        ///     Initializes a new instance of the <see cref="ConfigurationDefault" /> class.
        /// </summary>
        public ConfigurationDefault()
        {
            this.Configuration = Helpers.Configuration.DefaultConfiguration;
        }

        #endregion

        #region Public Properties

        /// <summary>
        ///     Gets or sets the configuration.
        /// </summary>
        public DnsConfiguration Configuration
        {
            get
            {
                OneManyResourceLock.Enter(false);
                var rtn = localConfiguration;
                OneManyResourceLock.Leave();
                return rtn;
            }

            set
            {
                OneManyResourceLock.Enter(true);
                localConfiguration = value;
                OneManyResourceLock.Leave();
            }
        }

        #endregion
    }
}